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Chapter 1

Describe the levels of organization of life 1. chemical 2. cellular 3. tissue 4. organ level 5.organ system level
What is the role of the serous membranes covering some organs? To prevent friction between the organ and body cavity wall two serous membrane layers are separated by a cavity containing serous fluid.-organs to slide without friction across the cavity walls and one another as they carry out their routine functions.
What is the function of serous fluid? It enables organs, such as the heart and the stomach, to slide across cavity walls and each other without friction-This freedom of movement is especially important for mobile organs, such as the pumping heart and the churning stomach.
Which of the following organs is least likely to be damaged in an automobile accident? Stomach, intestines, bladder, or liver. The urinary bladder is very well protected in the pelvic cavity by the two hip bones.